1*4684ddb6SLionel Sambuc //===-- floatundisf_test.c - Test __floatundisf ---------------------------===//
2*4684ddb6SLionel Sambuc //
3*4684ddb6SLionel Sambuc // The LLVM Compiler Infrastructure
4*4684ddb6SLionel Sambuc //
5*4684ddb6SLionel Sambuc // This file is dual licensed under the MIT and the University of Illinois Open
6*4684ddb6SLionel Sambuc // Source Licenses. See LICENSE.TXT for details.
7*4684ddb6SLionel Sambuc //
8*4684ddb6SLionel Sambuc //===----------------------------------------------------------------------===//
9*4684ddb6SLionel Sambuc //
10*4684ddb6SLionel Sambuc // This file tests __floatundisf for the compiler_rt library.
11*4684ddb6SLionel Sambuc //
12*4684ddb6SLionel Sambuc //===----------------------------------------------------------------------===//
13*4684ddb6SLionel Sambuc
14*4684ddb6SLionel Sambuc #include "int_lib.h"
15*4684ddb6SLionel Sambuc #include <float.h>
16*4684ddb6SLionel Sambuc #include <stdio.h>
17*4684ddb6SLionel Sambuc
18*4684ddb6SLionel Sambuc // Returns: convert a to a float, rounding toward even.
19*4684ddb6SLionel Sambuc
20*4684ddb6SLionel Sambuc // Assumption: float is a IEEE 32 bit floating point type
21*4684ddb6SLionel Sambuc // du_int is a 64 bit integral type
22*4684ddb6SLionel Sambuc
23*4684ddb6SLionel Sambuc // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
24*4684ddb6SLionel Sambuc
25*4684ddb6SLionel Sambuc float __floatundisf(du_int a);
26*4684ddb6SLionel Sambuc
test__floatundisf(du_int a,float expected)27*4684ddb6SLionel Sambuc int test__floatundisf(du_int a, float expected)
28*4684ddb6SLionel Sambuc {
29*4684ddb6SLionel Sambuc float x = __floatundisf(a);
30*4684ddb6SLionel Sambuc if (x != expected)
31*4684ddb6SLionel Sambuc printf("error in __floatundisf(%llX) = %a, expected %a\n",
32*4684ddb6SLionel Sambuc a, x, expected);
33*4684ddb6SLionel Sambuc return x != expected;
34*4684ddb6SLionel Sambuc }
35*4684ddb6SLionel Sambuc
36*4684ddb6SLionel Sambuc char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
37*4684ddb6SLionel Sambuc char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
38*4684ddb6SLionel Sambuc char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
39*4684ddb6SLionel Sambuc
main()40*4684ddb6SLionel Sambuc int main()
41*4684ddb6SLionel Sambuc {
42*4684ddb6SLionel Sambuc if (test__floatundisf(0, 0.0F))
43*4684ddb6SLionel Sambuc return 1;
44*4684ddb6SLionel Sambuc
45*4684ddb6SLionel Sambuc if (test__floatundisf(1, 1.0F))
46*4684ddb6SLionel Sambuc return 1;
47*4684ddb6SLionel Sambuc if (test__floatundisf(2, 2.0F))
48*4684ddb6SLionel Sambuc return 1;
49*4684ddb6SLionel Sambuc
50*4684ddb6SLionel Sambuc if (test__floatundisf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62F))
51*4684ddb6SLionel Sambuc return 1;
52*4684ddb6SLionel Sambuc if (test__floatundisf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62F))
53*4684ddb6SLionel Sambuc return 1;
54*4684ddb6SLionel Sambuc
55*4684ddb6SLionel Sambuc if (test__floatundisf(0x8000008000000000ULL, 0x1p+63F))
56*4684ddb6SLionel Sambuc return 1;
57*4684ddb6SLionel Sambuc if (test__floatundisf(0x8000010000000000LL, 0x1.000002p+63F))
58*4684ddb6SLionel Sambuc return 1;
59*4684ddb6SLionel Sambuc
60*4684ddb6SLionel Sambuc if (test__floatundisf(0x8000000000000000LL, 0x1p+63F))
61*4684ddb6SLionel Sambuc return 1;
62*4684ddb6SLionel Sambuc if (test__floatundisf(0x8000000000000001LL, 0x1p+63F))
63*4684ddb6SLionel Sambuc return 1;
64*4684ddb6SLionel Sambuc
65*4684ddb6SLionel Sambuc if (test__floatundisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
66*4684ddb6SLionel Sambuc return 1;
67*4684ddb6SLionel Sambuc if (test__floatundisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
68*4684ddb6SLionel Sambuc return 1;
69*4684ddb6SLionel Sambuc
70*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
71*4684ddb6SLionel Sambuc return 1;
72*4684ddb6SLionel Sambuc
73*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
74*4684ddb6SLionel Sambuc return 1;
75*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
76*4684ddb6SLionel Sambuc return 1;
77*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
78*4684ddb6SLionel Sambuc return 1;
79*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
80*4684ddb6SLionel Sambuc return 1;
81*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
82*4684ddb6SLionel Sambuc return 1;
83*4684ddb6SLionel Sambuc
84*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
85*4684ddb6SLionel Sambuc return 1;
86*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
87*4684ddb6SLionel Sambuc return 1;
88*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
89*4684ddb6SLionel Sambuc return 1;
90*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
91*4684ddb6SLionel Sambuc return 1;
92*4684ddb6SLionel Sambuc if (test__floatundisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
93*4684ddb6SLionel Sambuc return 1;
94*4684ddb6SLionel Sambuc
95*4684ddb6SLionel Sambuc return 0;
96*4684ddb6SLionel Sambuc }
97